<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>用户登录</title>
</head>
<body>
<h1>用户登录</h1>
<a href="register.html">返回注册</a>
<hr>
<form action="main.html" method="post">
    用户名:<input type="text" name="username"><br>
    密&nbsp;&nbsp;&nbsp;码:<input type="password" name="password"><br>
    验证码:<input type="text" name="code">
    <a href="javascript:;"><img src="" alt="验证码加载失败"></a><br>
    <input type="submit" value="登录">
</form>
</body>
</html>